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  2. List of ZIP Code prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_ZIP_Code_prefixes

    An asterisk (*) indicates that the listed place name is the "default" place name for all addresses in the prefix, that is, that addresses for all ZIP codes beginning with that three-digit prefix will have that place name in the city portion of the address (example: 23219, 23224, and 23294 will all have "Richmond, Virginia" addresses, even if ...

  3. List of postal codes - Wikipedia

    en.wikipedia.org/wiki/List_of_postal_codes

    NNNNN for PO Boxes. NNNNN-NNNN for home delivery. A complete 13-digit code has 5-digit number representing region, sector, city, and zone; 4-digit X between 2000 and 5999; 4-digit Y between 6000 and 9999. [23] Digits of 5-digit code may represent postal region, sector, branch, section, and block respectively. [24] Senegal: SN: NNNNN

  4. ZIP Code - Wikipedia

    en.wikipedia.org/wiki/ZIP_Code

    By the early 1960s, a more organized system was needed, and non-mandatory five-digit ZIP Codes were introduced nationwide on July 1, 1963. [4] [5] The USPOD issued its Publication 59: Abbreviations for Use with ZIP Code on October 1, 1963, with the list of two-letter state abbreviations which are generally written with both letters capitalized ...

  5. Postal address verification - Wikipedia

    en.wikipedia.org/wiki/Postal_address_verification

    If the address is valid, it is assigned a ZIP+4 code something like this: 12344-5678, where the first five digits are the ZIP code and the trailing four digits are the delivery range. An address with a ZIP+4 code (or nine-digit ZIP code) is considered to be valid. In most cases, this means that the address is deliverable.

  6. Address geocoding - Wikipedia

    en.wikipedia.org/wiki/Address_geocoding

    In 1983, nine-digit ZIP+4 codes were brought about as an extra identifier in more accurately locating addresses. In 1964, the Harvard Laboratory for Computer Graphics and Spatial Analysis developed groundbreaking software code – e.g. GRID, and SYMAP – all of which were sources for commercial development of GIS.

  7. Richest ZIP Codes in Every State - AOL

    www.aol.com/richest-zip-codes-every-state...

    Illinois. Kenilworth: 60043. Median household income: $212,750. Total households: 794. Glencoe: 60022. ... analyzed all 50 states to find the richest zip codes in every state. GOBankingRates found ...

  8. List of Illinois area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Illinois_area_codes

    The remainder of the state switched to ten-digit dialing in October 2021, as a result of the implementation of the 988 Suicide & Crisis Lifeline. Two years later, area code 861 went into effect on February 24, 2023, as an overlay with 309. [1] [2] Area code 730 went into effect on July 7, 2023, as an overlay complex with 618. As of that date ...

  9. ZIP Code Tabulation Area - Wikipedia

    en.wikipedia.org/wiki/ZIP_Code_Tabulation_Area

    Individual USPS ZIP codes can cross state, place, county, census tract, census block group and census block boundaries, so the Census Bureau asserts that "there is no correlation between ZIP codes and Census Bureau geography". [2] Moreover, the USPS frequently realigns, merges, or splits ZIP codes to meet changing needs.